Harrison Spinks Palladium 16500 Pocket Mattress (Medium Feel)
Mattress
Harrison Spinks Palladium 16500 Pocket Mattress (Medium Feel)
Size
Firmness
Medium
Construction
Depth (cm)
29
Layers
5
Layer Details
- Wool comfort layer. Soft, springy British wool sits at the surface and moulds around your body shape. It's naturally breathable yet insulating, which means it helps regulate temperature through the seasons.
- Cotton, hemp and flax blend. Further layers of cotton and wool blended with hemp and flax fibres improve airflow within the mattress. These fibres also wick away moisture, useful if you tend to sleep warm.
- Mini pocket springs. A layer of 14000 mini springs contours to your body for personalised comfort. Because each spring moves independently, there's room for air to circulate too.
- Cortec Quad Revolution pocket springs. An award-winning layer of 1000 springs with a dual design, each in its own pocket and secured into groups of four. They're highly flexible, adjusting to your movement and weight through the night.
- Posturfil springs. A base layer of 1500 Posturfil springs, flexible and adaptable. They sense movement to keep support consistent as you shift position.
Layer details from mattressonline.co.uk product page, September 2026.
- The classic shared size: At 135 x 190cm, the UK double is the traditional couples' size, giving two people 67.5cm each without dominating the room.
- Fits rooms a king would crowd: We suggest at least 2.6m x 2.8m, which most UK bedrooms manage while still leaving space for bedside tables on both sides.
- Natural cooling for two: Wool, hemp and flax breathe far better than foam, which matters more when two bodies are sharing a 135cm surface all night.
- Springs that move independently: The 14000 mini springs contour to each sleeper separately, so a partner shifting on their side of the double disturbs you less.
- Easy to dress: Standard double sheets and a 200 x 200cm duvet fit this size, stocked everywhere at every price.
This size suits you if...
You share the bed every night and your room suits a bed of this footprint, or you sleep alone and want proper space to spread out, perhaps with a dog or cat claiming a corner. It also makes a generous guest room bed for visiting couples, since the UK double is the size most guests expect to find.
Consider another size if...
You both want more personal space than 67.5cm each and your room can take at least 2.7m x 2.9m. We'd recommend the UK king instead: it's 15cm wider and 10cm longer than the UK double.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
Is the Palladium 16500 UK double big enough for two people?
Yes, for most couples. You get 67.5cm each across the 135cm width, and the mini spring surface responds to each of you independently, so one person turning over is less noticeable. Two broader-built sleepers, or a couple who like to sprawl, may find it a little snug and prefer the UK king.
Will the Harrison Spinks Palladium 16500 in a UK double fit a small bedroom?
Usually, yes. We suggest a room of at least 2.6m x 2.8m for a UK double, which leaves walking room and space for bedside tables on both sides. Around 3m x 3m is the comfortable norm. In a compact second bedroom or first flat with a wardrobe and drawers to squeeze in, measure before you commit.
Should I choose the Palladium 16500 in a UK double or a UK king?
It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, and we suggest at least 2.7m x 2.9m for the UK king. If your bedroom can take that comfortably, the extra width is a real gain for two sharing a soft to medium mattress. If not, the UK double is the sensible call.
Does the soft to medium feel matter more in a double?
Slightly, yes. With 67.5cm each, you sleep closer to your partner than on a larger size, so a surface where heavier sleepers settle in a little more can create a gentle lean towards the middle. The grouped Cortec springs adjust to each person's weight, which helps, but very mismatched couples may prefer sizing up.
Where can I buy the Palladium 16500 in a UK double?
Compare the retailers listed on this page. The prices shown here are for the UK double specifically and are updated as retailers change them, so it's worth checking back if you're deciding between sizes, since each size is priced separately.